Summer Weather at Quimper-Pluguffan France

Daily high temperatures increase by 4°F, from 65°F to 69°F, rarely falling below 58°F or exceeding 81°F. The highest daily average high temperature is 71°F on August 2.

Daily low temperatures increase by 4°F, from 51°F to 55°F, rarely falling below 45°F or exceeding 61°F. The highest daily average low temperature is 57°F on July 28.

For reference, on July 31, the hottest day of the year, temperatures at Quimper-Pluguffan typically range from 57°F to 71°F, while on February 7, the coldest day of the year, they range from 39°F to 49°F.

The figure below shows you a compact characterization of the hourly average summer temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Coquille, United States (5,166 miles away); Port Townsend, United States (4,854 miles); and Leeston, New Zealand (12,113 miles) are the far-away foreign places with temperatures most similar to Quimper-Pluguffan (view comparison).

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The summer at Quimper-Pluguffan experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 49% to 43%. The lowest chance of overcast or mostly cloudy conditions is 37% on July 23.

The clearest day of the summer is July 23, with clear, mostly clear, or partly cloudy conditions 63% of the time.

For reference, on December 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 63%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Quimper-Pluguffan, the chance of a wet day over the course of the summer is gradually decreasing, starting the season at 22% and ending it at 19%.

For reference, the year's highest daily chance of a wet day is 41% on December 30, and its lowest chance is 16% on August 6.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the summer at Quimper-Pluguffan is essentially constant, remaining about 1.3 inches throughout, and rarely exceeding 3.1 inches or falling below 0.2 inches.

The lowest average 31-day accumulation is 1.1 inches on July 31.

Over the course of the summer at Quimper-Pluguffan, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 2 hours, 22 minutes, implying an average daily decrease of 1 minute, 34 seconds, and weekly decrease of 10 minutes, 56 seconds.

The shortest day of the summer is August 31, with 13 hours, 25 minutes of daylight and the longest day is June 20, with 16 hours, 3 minutes of daylight.

The earliest sunrise of the summer at Quimper-Pluguffan is 6:16 AM on June 16 and the latest sunrise is 1 hour, 17 minutes later at 7:33 AM on August 31.

The latest sunset is 10:20 PM on June 25 and the earliest sunset is 1 hour, 21 minutes earlier at 8:58 PM on August 31.

Daylight saving time is observed at Quimper-Pluguffan during 2024, but it neither starts nor ends during the summer, so the entire season is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:17 AM and sets 16 hours, 3 minutes later, at 10:19 PM, while on December 21, the shortest day of the year, it rises at 9:03 AM and sets 8 hours, 22 minutes later, at 5:26 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for the summer of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy at Quimper-Pluguffan is gradually increasing during the summer, rising from 0% to 3% over the course of the season.

The highest chance of a muggy day during the summer is 4% on August 12.

For reference, on August 12, the muggiest day of the year, there are muggy conditions 4% of the time, while on October 28, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Quimper-Pluguffan is essentially constant during the summer, remaining within 0.6 miles per hour of 10.8 miles per hour throughout.

For reference, on January 1, the windiest day of the year, the daily average wind speed is 15.4 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 10.2 miles per hour.

The lowest daily average wind speed during the summer is 10.2 miles per hour on August 4.

The hourly average wind direction at Quimper-Pluguffan throughout the summer is predominantly from the west, with a peak proportion of 43% on July 18.

Quimper-Pluguffan is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature at Quimper-Pluguffan is increasing during the summer, rising by 5°F, from 58°F to 62°F, over the course of the season.

The highest average surface water temperature during the summer is 63°F on August 10.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Quimper-Pluguffan typically lasts for 9.2 months (278 days), from around February 29 to around December 3, rarely starting before January 25 or after April 2, and rarely ending before November 8 or after January 2.

The summer at Quimper-Pluguffan is reliably fully within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days at Quimper-Pluguffan are very rapidly increasing during the summer, increasing by 1,115°F, from 340°F to 1,454°F, over the course of the season.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy at Quimper-Pluguffan is decreasing during the summer, falling by 1.5 kWh, from 6.5 kWh to 5.1 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the summer is 6.9 kWh on July 1.

For the purposes of this report, the geographical coordinates of Quimper-Pluguffan are 47.975 deg latitude, -4.168 deg longitude, and 299 ft elevation.

The topography within 2 miles of Quimper-Pluguffan contains only modest variations in elevation, with a maximum elevation change of 463 feet and an average elevation above sea level of 249 feet. Within 10 miles contains only modest variations in elevation (951 feet). Within 50 miles also contains very significant variations in elevation (1,276 feet).

The area within 2 miles of Quimper-Pluguffan is covered by cropland (71%) and artificial surfaces (14%), within 10 miles by cropland (66%) and trees (10%), and within 50 miles by water (54%) and cropland (32%).